Piezoelectric and Dielectric Properties of Bi2O3-Doped (Bi0.5Na0.5)0.94Ba0.06TiO3 Lead-Free Piezoelectric Ceramics
Bi2O3 doped (Bi0.5Na0.5)0.94Ba0.06TiO3 (BNBT6) lead-free piezoelectric ceramics were fabricated by a conventional sintering technique.The effects of Bi2O3 on the piezoelectric properties and microstructures of the doped BNBT6 were investigated.X-ray diffraction analysis showed that a solid solution was formed when Bi2O3 diffused into BNBT6 lattice and the crystal structure of the sintered hybrid changed from rhombohedral to tetragonal symmetry with increasing Bi2O3 amount.Piezoelectric and dielectric properties measurements revealed that doping Bi2O3 within a certain range enhanced the piezoelectric coefficient (d33),electromechanical coupling factor (kp),relative dielectric constant (ε33T/ε0),and dielectric loss (tang).When 3mol% Bi2O3 was doped,both d33 and kp of the ceramics reached their maxima,165pC/N and 24%,respectively.
Lead-free Piezoelectric ceramics Piezoelectric property Dielectric properties
Jianqiang Hu Zhiwu Chen
School of Chemical Science,South China University of Technology,Guangzhou 510640,China School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Ch
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1915-1918
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）